here's one pretty big difference to keep in mind, and by no means is it the defining difference. the 3P's will borrow/improve on clever ideas from TT, TT doesn't borrow/improve on clever ideas from 3P. I understand why TT doesn't do this, but I think it will always handicap them in a sense. And don't tell me that TT designers are completely oblivious to the 3P MP's out there. Now don't get me wrong, I always buy the official versions cuz I love me some TT, but there are things that are now practically "standard" in 3P stuff such as articulated fingers and light effects that TT doesn't seem likely to adopt soon.